As I intend using the "wire in tube" method for points operation on my forthcoming 0 gauge layout, albeit operated by Hattons point motors as opposed to manual operation, I was wondering what others have used for both tube (plastic or maybe brass?) and wire (piano wire or something else?). The maximum length of any 'wire in tube' is likely to only be around 550mm, most less than that, so no long lengths involved causing problems due to friction etc, as the layout width is only 600mm, idea being to site the actual motors at the outer edge of the layout, concealed by buildings/scenery. Using brass tube will make it simple to solder tabs to the tube for fixing to the baseboard, but it'll be more expensive, alternately using plastic (Evergreen?) tube with fixing tabs glued to the tube is likely to be cheaper, then as to wire, piano wire, or perhaps some of the stainless steel rod used by the radio controlled modellers? I've seen dismantled butt hinges used as guides for operating wires, and I know that Gormo uses straightened wire coat hangers, but I was thinking of something as small a diameter in both tube and wire as possible to help concealment. All ideas/suggestions welcomed. Keith.